如何知道指针是否指向堆或堆栈？ [英] How to know if a pointer points to the heap or the stack?

问题描述

示例：

bool isHeapPtr(void* ptr)
{
     //...
}

int iStack = 35;
int *ptrStack = &iStack;
bool isHeapPointer1 = isHeapPtr(ptrStack); // Should be false
bool isHeapPointer2 = isHeapPtr(new int(5)); // Should be true
/* I know... it is a memory leak */

< h2>为什么，我想知道这一点：

如果我有一个类中的成员指针，我不知道指针对象是否是新分配的。然后我应该使用这样的实用程序知道我是否需要 delete 指针。

我的设计尚未完成。所以，我将这样编程，我总是有 delete 它。我要避免垃圾编程

But:
My design isn't made yet. So, I will program it that way I always have to delete it. I'm going to avoid rubbish programming

推荐答案

没有办法这样做 - 如果你需要做，是你的设计有问题。有关为什么您无法在更有效的C ++ 中进行此操作的讨论。

There is no way of doing this - and if you need to do it, there is something wrong with your design. There is a discussion of why you can't do this in More Effective C++.

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